intel_tex_image.c revision 02ebad900db4ef1ac42cbfb41b433919a4c857a2 
1
2#include "main/glheader.h"
3#include "main/macros.h"
4#include "main/mfeatures.h"
5#include "main/mtypes.h"
6#include "main/enums.h"
7#include "main/bufferobj.h"
8#include "main/context.h"
9#include "main/formats.h"
10#include "main/pbo.h"
11#include "main/renderbuffer.h"
12#include "main/texcompress.h"
13#include "main/texgetimage.h"
14#include "main/texobj.h"
15#include "main/teximage.h"
16#include "main/texstore.h"
17
18#include "intel_context.h"
19#include "intel_mipmap_tree.h"
20#include "intel_buffer_objects.h"
21#include "intel_batchbuffer.h"
22#include "intel_tex.h"
23#include "intel_blit.h"
24#include "intel_fbo.h"
25#include "intel_span.h"
26
27#define FILE_DEBUG_FLAG DEBUG_TEXTURE
28
29/* Work back from the specified level of the image to the baselevel and create a
30 * miptree of that size.
31 */
32struct intel_mipmap_tree *
33intel_miptree_create_for_teximage(struct intel_context *intel,
34				  struct intel_texture_object *intelObj,
35				  struct intel_texture_image *intelImage,
36				  bool expect_accelerated_upload)
37{
38   GLuint firstLevel;
39   GLuint lastLevel;
40   int width, height, depth;
41   GLuint i;
42
43   intel_miptree_get_dimensions_for_image(&intelImage->base.Base,
44                                          &width, &height, &depth);
45
46   DBG("%s\n", __FUNCTION__);
47
48   if (intelImage->base.Base.Level > intelObj->base.BaseLevel &&
49       (width == 1 ||
50        (intelObj->base.Target != GL_TEXTURE_1D && height == 1) ||
51        (intelObj->base.Target == GL_TEXTURE_3D && depth == 1))) {
52      /* For this combination, we're at some lower mipmap level and
53       * some important dimension is 1.  We can't extrapolate up to a
54       * likely base level width/height/depth for a full mipmap stack
55       * from this info, so just allocate this one level.
56       */
57      firstLevel = intelImage->base.Base.Level;
58      lastLevel = intelImage->base.Base.Level;
59   } else {
60      /* If this image disrespects BaseLevel, allocate from level zero.
61       * Usually BaseLevel == 0, so it's unlikely to happen.
62       */
63      if (intelImage->base.Base.Level < intelObj->base.BaseLevel)
64	 firstLevel = 0;
65      else
66	 firstLevel = intelObj->base.BaseLevel;
67
68      /* Figure out image dimensions at start level. */
69      for (i = intelImage->base.Base.Level; i > firstLevel; i--) {
70	 width <<= 1;
71	 if (height != 1)
72	    height <<= 1;
73	 if (depth != 1)
74	    depth <<= 1;
75      }
76
77      /* Guess a reasonable value for lastLevel.  This is probably going
78       * to be wrong fairly often and might mean that we have to look at
79       * resizable buffers, or require that buffers implement lazy
80       * pagetable arrangements.
81       */
82      if ((intelObj->base.Sampler.MinFilter == GL_NEAREST ||
83	   intelObj->base.Sampler.MinFilter == GL_LINEAR) &&
84	  intelImage->base.Base.Level == firstLevel &&
85	  (intel->gen < 4 || firstLevel == 0)) {
86	 lastLevel = firstLevel;
87      } else if (intelObj->base.Target == GL_TEXTURE_EXTERNAL_OES) {
88	 lastLevel = firstLevel;
89      } else {
90	 lastLevel = firstLevel + _mesa_logbase2(MAX2(MAX2(width, height), depth));
91      }
92   }
93
94   return intel_miptree_create(intel,
95			       intelObj->base.Target,
96			       intelImage->base.Base.TexFormat,
97			       firstLevel,
98			       lastLevel,
99			       width,
100			       height,
101			       depth,
102			       expect_accelerated_upload,
103                               0 /* num_samples */,
104                               false /* msaa_is_interleaved */);
105}
106
107/* There are actually quite a few combinations this will work for,
108 * more than what I've listed here.
109 */
110static bool
111check_pbo_format(GLenum format, GLenum type,
112                 gl_format mesa_format)
113{
114   switch (mesa_format) {
115   case MESA_FORMAT_ARGB8888:
116      return (format == GL_BGRA && (type == GL_UNSIGNED_BYTE ||
117				    type == GL_UNSIGNED_INT_8_8_8_8_REV));
118   case MESA_FORMAT_RGB565:
119      return (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5);
120   case MESA_FORMAT_L8:
121      return (format == GL_LUMINANCE && type == GL_UNSIGNED_BYTE);
122   case MESA_FORMAT_YCBCR:
123      return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
124   default:
125      return false;
126   }
127}
128
129
130/* XXX: Do this for TexSubImage also:
131 */
132static bool
133try_pbo_upload(struct gl_context *ctx,
134               struct gl_texture_image *image,
135               const struct gl_pixelstore_attrib *unpack,
136	       GLenum format, GLenum type,
137               GLint width, GLint height, const void *pixels)
138{
139   struct intel_texture_image *intelImage = intel_texture_image(image);
140   struct intel_context *intel = intel_context(ctx);
141   struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
142   GLuint src_offset, src_stride;
143   GLuint dst_x, dst_y, dst_stride;
144   drm_intel_bo *dst_buffer, *src_buffer;
145
146   if (!_mesa_is_bufferobj(unpack->BufferObj))
147      return false;
148
149   DBG("trying pbo upload\n");
150
151   if (intel->ctx._ImageTransferState ||
152       unpack->SkipPixels || unpack->SkipRows) {
153      DBG("%s: image transfer\n", __FUNCTION__);
154      return false;
155   }
156
157   if (!check_pbo_format(format, type, intelImage->base.Base.TexFormat)) {
158      DBG("%s: format mismatch (upload to %s with format 0x%x, type 0x%x)\n",
159	  __FUNCTION__, _mesa_get_format_name(intelImage->base.Base.TexFormat),
160	  format, type);
161      return false;
162   }
163
164   ctx->Driver.AllocTextureImageBuffer(ctx, image, image->TexFormat,
165                                       width, height, 1);
166
167   if (!intelImage->mt) {
168      DBG("%s: no miptree\n", __FUNCTION__);
169      return false;
170   }
171
172   dst_buffer = intelImage->mt->region->bo;
173   src_buffer = intel_bufferobj_source(intel, pbo, 64, &src_offset);
174   /* note: potential 64-bit ptr to 32-bit int cast */
175   src_offset += (GLuint) (unsigned long) pixels;
176
177   if (unpack->RowLength > 0)
178      src_stride = unpack->RowLength;
179   else
180      src_stride = width;
181
182   intel_miptree_get_image_offset(intelImage->mt, intelImage->base.Base.Level,
183				  intelImage->base.Base.Face, 0,
184				  &dst_x, &dst_y);
185
186   dst_stride = intelImage->mt->region->pitch;
187
188   if (!intelEmitCopyBlit(intel,
189			  intelImage->mt->cpp,
190			  src_stride, src_buffer,
191			  src_offset, false,
192			  dst_stride, dst_buffer, 0,
193			  intelImage->mt->region->tiling,
194			  0, 0, dst_x, dst_y, width, height,
195			  GL_COPY)) {
196      DBG("%s: blit failed\n", __FUNCTION__);
197      return false;
198   }
199
200   DBG("%s: success\n", __FUNCTION__);
201   return true;
202}
203
204static void
205intelTexImage(struct gl_context * ctx,
206              GLuint dims,
207              struct gl_texture_image *texImage,
208              GLint internalFormat,
209              GLint width, GLint height, GLint depth, GLint border,
210              GLenum format, GLenum type, const void *pixels,
211              const struct gl_pixelstore_attrib *unpack)
212{
213   DBG("%s target %s level %d %dx%dx%d\n", __FUNCTION__,
214       _mesa_lookup_enum_by_nr(texImage->TexObject->Target),
215       texImage->Level, width, height, depth);
216
217   /* Attempt to use the blitter for PBO image uploads.
218    */
219   if (dims <= 2 &&
220       try_pbo_upload(ctx, texImage, unpack, format, type,
221		      width, height, pixels)) {
222      return;
223   }
224
225   DBG("%s: upload image %dx%dx%d pixels %p\n",
226       __FUNCTION__, width, height, depth, pixels);
227
228   _mesa_store_teximage(ctx, dims, texImage, internalFormat,
229                        width, height, depth, 0,
230                        format, type, pixels, unpack);
231}
232
233
234/**
235 * Binds a region to a texture image, like it was uploaded by glTexImage2D().
236 *
237 * Used for GLX_EXT_texture_from_pixmap and EGL image extensions,
238 */
239static void
240intel_set_texture_image_region(struct gl_context *ctx,
241			       struct gl_texture_image *image,
242			       struct intel_region *region,
243			       GLenum target,
244			       GLenum internalFormat,
245			       gl_format format,
246                               uint32_t offset)
247{
248   struct intel_context *intel = intel_context(ctx);
249   struct intel_texture_image *intel_image = intel_texture_image(image);
250   struct gl_texture_object *texobj = image->TexObject;
251   struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
252
253   _mesa_init_teximage_fields(&intel->ctx, image,
254			      region->width, region->height, 1,
255			      0, internalFormat, format);
256
257   ctx->Driver.FreeTextureImageBuffer(ctx, image);
258
259   intel_image->mt = intel_miptree_create_for_region(intel, target,
260						     image->TexFormat,
261						     region);
262   if (intel_image->mt == NULL)
263       return;
264
265   intel_image->mt->offset = offset;
266   intel_image->base.RowStride = region->pitch;
267
268   /* Immediately validate the image to the object. */
269   intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
270}
271
272void
273intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
274		   GLint texture_format,
275		   __DRIdrawable *dPriv)
276{
277   struct gl_framebuffer *fb = dPriv->driverPrivate;
278   struct intel_context *intel = pDRICtx->driverPrivate;
279   struct gl_context *ctx = &intel->ctx;
280   struct intel_texture_object *intelObj;
281   struct intel_renderbuffer *rb;
282   struct gl_texture_object *texObj;
283   struct gl_texture_image *texImage;
284   int level = 0, internalFormat = 0;
285   gl_format texFormat = MESA_FORMAT_NONE;
286
287   texObj = _mesa_get_current_tex_object(ctx, target);
288   intelObj = intel_texture_object(texObj);
289
290   if (!intelObj)
291      return;
292
293   if (dPriv->lastStamp != dPriv->dri2.stamp ||
294       !pDRICtx->driScreenPriv->dri2.useInvalidate)
295      intel_update_renderbuffers(pDRICtx, dPriv);
296
297   rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
298   /* If the region isn't set, then intel_update_renderbuffers was unable
299    * to get the buffers for the drawable.
300    */
301   if (!rb || !rb->mt)
302      return;
303
304   if (rb->mt->cpp == 4) {
305      if (texture_format == __DRI_TEXTURE_FORMAT_RGB) {
306         internalFormat = GL_RGB;
307         texFormat = MESA_FORMAT_XRGB8888;
308      }
309      else {
310         internalFormat = GL_RGBA;
311         texFormat = MESA_FORMAT_ARGB8888;
312      }
313   } else if (rb->mt->cpp == 2) {
314      internalFormat = GL_RGB;
315      texFormat = MESA_FORMAT_RGB565;
316   }
317
318   _mesa_lock_texture(&intel->ctx, texObj);
319   texImage = _mesa_get_tex_image(ctx, texObj, target, level);
320   intel_set_texture_image_region(ctx, texImage, rb->mt->region, target,
321				  internalFormat, texFormat, 0);
322   _mesa_unlock_texture(&intel->ctx, texObj);
323}
324
325void
326intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
327{
328   /* The old interface didn't have the format argument, so copy our
329    * implementation's behavior at the time.
330    */
331   intelSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
332}
333
334#if FEATURE_OES_EGL_image
335static void
336intel_image_target_texture_2d(struct gl_context *ctx, GLenum target,
337			      struct gl_texture_object *texObj,
338			      struct gl_texture_image *texImage,
339			      GLeglImageOES image_handle)
340{
341   struct intel_context *intel = intel_context(ctx);
342   __DRIscreen *screen;
343   __DRIimage *image;
344
345   screen = intel->intelScreen->driScrnPriv;
346   image = screen->dri2.image->lookupEGLImage(screen, image_handle,
347					      screen->loaderPrivate);
348   if (image == NULL)
349      return;
350
351   intel_set_texture_image_region(ctx, texImage, image->region,
352				  target, image->internal_format,
353                                  image->format, 0);
354}
355#endif
356
357void
358intelInitTextureImageFuncs(struct dd_function_table *functions)
359{
360   functions->TexImage = intelTexImage;
361
362#if FEATURE_OES_EGL_image
363   functions->EGLImageTargetTexture2D = intel_image_target_texture_2d;
364#endif
365}
366